成语：得心应手
拼音：dé xīn yìng shǒu
解释：得：得到，想到；应：反应，配合。心里怎么想，手就能怎么做。比喻技艺纯熟或做事情非常顺利。
翻译：to come handy, to come natural; with high proficiency

This chengyu describes that you are very proficient and good at doing a certain task. 得心 is that what comes into your mind, what you are thinking or what you want to do. Thus notice that 心 refers to your mind! 应手 means that you can realize it or put into practice. Literally translated it is “the mind thinks and the hands do it”. The figurative meaning is that you can do something with a high proficiency, and that it comes natural and handy.
For example:

• 拼音输入法比较简单，只要习惯了，打字就会得心应手。
  Pinyin input method is rather easy. Once you are used to it, it will come very natural.
• 平时多做题，考试的时候解题就能得心应手。
  When you practice often, you will be able to solve the problems in a test with more ease.

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